cep-resolver-brazil-toolkit
Facility to fetch full address specifications within Brazil leveraging Postal Index Numbers (CEPs) to resolve thorough street, district, municipality, and federation unit details.
Author

guilhermelirio
Quick Info
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Tags
cep-resolver-brazil-toolkit
Overview
This implementation serves as an MCP (Model Context Protocol) service dedicated to querying Brazilian Postal Index Number (CEP) data. It interfaces with the ViaCEP service to procure exhaustive address records corresponding to the provided 8-digit code.
Capabilities
- Resolution of comprehensive address data using the CEP input.
- Output includes street designation (logradouro), neighborhood (bairro), municipality (cidade), state (estado), region, telephone dialing code (DDD), and IBGE identifier.
- Adherence to the Model Context Protocol standard for seamless integration with AI agents.
Deployment Guide
bash
Obtain the source code repository
git clone https://github.com/guilhermelirio/brazilian-cep-mcp.git cd brazilian-cep-mcp
Install required software dependencies
npm install
Operational Instructions
Code Compilation
To transform the TypeScript source into executable JavaScript:
bash npm run build
Service Startup
To launch the server for active development cycles:
bash npm run dev
To initiate the service post-compilation:
bash npm start
Invoking the CEP Lookup
The service exposes the consultar-cep utility. It mandates a single argument:
cep: An 8-digit numeric postal code (mandatory argument).
Example invocation payload:
{ "cep": "01001000" }
Expected Data Structure Response:
Address Record Retrieved: CEP: 01001-000 Street: Praça da Sé Additional Info: lado ímpar District: Sé Municipality: São Paulo Federation Unit: SP (São Paulo) Region: Sudeste Dialing Code: 11 IBGE Code: 3550308
Technology Stack
- TypeScript
- Node.js runtime environment
- Axios library for handling external HTTP transactions
- Zod library for input schema validation
- Model Context Protocol SDK
Smithery Configuration
This project is architected to operate optimally within the Smithery.ai ecosystem, which streamlines the deployment and execution of MCP endpoint services.
Project Layout
brazilian-cep-mcp/ ├── src/ │ └── index.ts # Primary application logic ├── dist/ # Compiled JavaScript artifacts ├── node_modules/ # Dependency packages ├── smithery.yaml # Smithery orchestration definition file ├── package.json # Project metadata and script definitions ├── tsconfig.json # TypeScript compiler settings └── README.md # Documentation file (this document)
Creator
Guilherme Lirio Tomasi de Oliveira
Licensing Details
This software is offered under the MIT License terms. Refer to the [LICENSE] file for a complete statement.
Contributions Policy
We welcome external input! Please feel free to submit bug reports via issues or propose feature enhancements through pull requests.
WIKIPEDIA: XMLHttpRequest (XHR) is an API in the form of a JavaScript object whose methods transmit HTTP requests from a web browser to a web server. The methods allow a browser-based application to send requests to the server after page loading is complete, and receive information back. XMLHttpRequest is a component of Ajax programming. Prior to Ajax, hyperlinks and form submissions were the primary mechanisms for interacting with the server, often replacing the current page with another one.
== History == The concept behind XMLHttpRequest was conceived in 2000 by the developers of Microsoft Outlook. The concept was then implemented within the Internet Explorer 5 browser (1999). However, the original syntax did not use the XMLHttpRequest identifier. Instead, the developers used the identifiers ActiveXObject("Msxml2.XMLHTTP") and ActiveXObject("Microsoft.XMLHTTP"). As of Internet Explorer 7 (2006), all browsers support the XMLHttpRequest identifier. The XMLHttpRequest identifier is now the de facto standard in all the major browsers, including Mozilla's Gecko layout engine (2002), Safari 1.2 (2004) and Opera 8.0 (2005).
=== Standards === The World Wide Web Consortium (W3C) published a Working Draft specification for the XMLHttpRequest object on April 5, 2006. On February 25, 2008, the W3C published the Working Draft Level 2 specification. Level 2 added methods to monitor event progress, allow cross-site requests, and handle byte streams. At the end of 2011, the Level 2 specification was absorbed into the original specification. At the end of 2012, the WHATWG took over development and maintains a living document using Web IDL.
== Usage == Generally, sending a request with XMLHttpRequest has several programming steps.
Create an XMLHttpRequest object by calling a constructor: Call the "open" method to specify the request type, identify the relevant resource, and select synchronous or asynchronous operation: For an asynchronous request, set a listener that will be notified when the request's state changes: Initiate the request by calling the "send" method: Respond to state changes in the event listener. If the server sends response data, by default it is captured in the "responseText" property. When the object stops processing the response, it changes to state 4, the "done" state. Aside from these general steps, XMLHttpRequest has many options to control how the request is sent and how the response is processed. Custom header fields can be added to the request to indicate how the server should fulfill it, and data can be uploaded to the server by providing it in the "send" call. The response can be parsed from the JSON format into a readily usable JavaScript object, or processed gradually as it arrives rather than waiting for the entire text. The request can be aborted prematurely or set to fail if not completed in a specified amount of time.
== Cross-domain requests ==
In the early development of the World Wide Web, it was found possible to brea
